{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-6335","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","state":"PUBLISHED","assignerShortName":"GitLab","dateReserved":"2026-04-15T09:04:47.248Z","datePublished":"2026-05-14T05:33:57.334Z","dateUpdated":"2026-05-15T09:58:59.492Z"},"containers":{"cna":{"title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","descriptions":[{"lang":"en","value":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.3 that under certain conditions could have allowed an authenticated user to execute arbitrary code in another user's browser session due to improper sanitization."}],"affected":[{"vendor":"GitLab","product":"GitLab","repo":"git://git@gitlab.com:gitlab-org/gitlab.git","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"],"versions":[{"version":"18.11","status":"affected","lessThan":"18.11.3","versionType":"semver"}],"defaultStatus":"unaffected"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","cweId":"CWE-79","type":"CWE"}]}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/596760"},{"url":"https://hackerone.com/reports/3673647","name":"HackerOne Bug Bounty Report #3673647","tags":["technical-description","exploit","permissions-required"]},{"url":"https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM"}}],"solutions":[{"lang":"en","value":"Upgrade to versions 18.11.3 or above."}],"credits":[{"lang":"en","value":"Thanks [toofikz](https://hackerone.com/toofikz) for reporting this vulnerability through our HackerOne bug bounty program","type":"finder"}],"providerMetadata":{"orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","shortName":"GitLab","dateUpdated":"2026-05-14T05:33:57.334Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-15T03:55:48.991964Z","id":"CVE-2026-6335","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-15T09:58:59.492Z"}}]}}